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Analog Devices Inc. LTC1403HMSE#TRPBF
- Part No.:
- LTC1403HMSE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC1403HMSE#TRPBF.pdf
- Description:
- IC ADC 12BIT SAR 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,004
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Product details
Overview
LTC1403HMSE#TRPBF from Analog Devices (formerly Linear Technology) is a 14-bit, 2.8 Msps serial analog-to-digital converter with differential inputs, 3V single-supply operation, 80 dB common-mode rejection, and –40°C to 125°C extended temperature grade. It features an internal 2.5V bandgap reference, 3-wire serial interface, and Sleep mode consuming only 10 µW - designed for high-speed portable data acquisition in harsh environments.
For engineers reviewing the LTC1403HMSE#TRPBF datasheet, LTC1403HMSE#TRPBF pinout, LTC1403HMSE#TRPBF application, or LTC1403HMSE#TRPBF equivalent, key selection criteria include guaranteed operation at 125°C, differential input linearity over full temperature range, 39 ns acquisition time, and compatibility with 50.4 MHz system clocks for full 2.8 Msps throughput.
Technical Context
The LTC1403HMSE#TRPBF implements a successive-approximation ADC architecture with a fully differential sample-and-hold front-end. Its timing logic synchronizes conversion start (CONV↑) with 16-cycle serial output transmission on SDO, supporting standard microcontroller SPI interfaces without additional framing logic.
It operates exclusively from a 3V supply (2.7–3.6V), draws 5.2 mA active current, and maintains 70.5 dB SINAD at 1.4 MHz input with internal reference. The device supports external reference overdrive (2.55V–VDD) and delivers 14-bit resolution (1 LSB = 152 µV) with ±0.5 LSB integral linearity over its full –40°C to 125°C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit (LTC1403A variant); ensures 152 µV LSB step size for precise unipolar 0–2.5V differential measurements. |
| Sampling Rate | 2.8 Msps maximum; enables real-time capture of signals up to 1.4 MHz (Nyquist-limited) with full linear bandwidth of 5 MHz. |
| Supply Voltage | 2.7 V to 3.6 V single supply; simplifies power design in battery-powered or 3.3V systems without level-shifting. |
| Operating Temperature | –40°C to +125°C; qualified for under-hood automotive, industrial motor control, and high-reliability embedded applications. |
| Common-Mode Rejection | 80 dB at 1 MHz; eliminates ground-loop noise and allows direct measurement from noisy sensor sources without isolation. |
| Power Consumption | 5.2 mA active / 10 µW Sleep mode; extends battery life in portable instrumentation while enabling rapid wake-up (<2 ms VREF settling). |
| Input Range | 0 V to 2.5 V differential (unipolar); compatible with 2.5V reference systems and supports single-ended use with AIN– grounded. |
Pinout & Package
Package: 10-lead plastic MSOP (MSE) with exposed pad (Pin 11), JEDEC MO-187AA compliant; thermal resistance θJA = 40°C/W; exposed pad must be soldered to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (AIN+) | Noninverting analog input | Differential input node; accepts 0–VDD common-mode voltage with 0–2.5V differential swing relative to AIN–. |
| 2 (AIN–) | Inverting analog input | Differential input node; complements AIN+; both sampled simultaneously for true differential acquisition. |
| 3 (VREF) | Internal 2.5V reference output | Provides stable reference for ADC core; bypassable with 10µF capacitor; overdrivable with 2.55–VDD external reference. |
| 4, 5, 6, 11 (GND) | Analog/digital ground & exposed pad | Four dedicated GND terminals including thermally enhanced exposed pad; all must connect directly to solid analog ground plane. |
| 7 (VDD) | 3V positive supply | Single power rail for entire IC; requires local 10µF + 0.1µF ceramic bypassing to minimize supply noise coupling into conversion. |
| 8 (SDO) | Three-state serial data output | Outputs 14-bit conversion result from prior cycle on rising SCK edges; Hi-Z when not enabled by CONV timing. |
| 9 (SCK) | Serial clock input | Drives internal timing; TTL/3V CMOS compatible; minimum pulse width 2 ns; controls data output alignment and Nap/Sleep entry. |
| 10 (CONV) | Convert start input | Rising-edge triggered; initiates sampling and conversion; multiple pulses enable Nap (2) or Sleep (≥4) modes with SCK held static. |
Key Features
| Feature | Design Value |
|---|---|
| Differential input architecture | Enables rejection of common-mode noise up to 80 dB at 1 MHz, eliminating need for external instrumentation amplifiers in noisy industrial environments. |
| 14-bit resolution with no missing codes | Guaranteed monotonic transfer function across –40°C to 125°C, ensuring reliable code sequencing in closed-loop control feedback paths. |
| 39 ns acquisition time | Supports full 2.8 Msps throughput with minimal external drive requirements; compatible with low-output-impedance op amps (e.g., LT1813, LT6200). |
| Sleep mode (10 µW) | Reduces standby power by >99% vs active mode; enables ultra-low-power wake-on-event architectures in battery-operated data loggers. |
| Internal 2.5V bandgap reference | Factory-trimmed to ±0.5% initial accuracy with 15 ppm/°C tempco; eliminates external reference component count and layout area. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Phase Current Sensing |
|---|---|
|
Use Scenario: Real-time monitoring of crankshaft position sensors and knock detection signals under hood temperatures up to 125°C. IC Role / Device Role / Timing Role: High-speed differential ADC capturing transient engine events with 2.8 Msps sampling synchronized to ignition timing pulses. Use Value: 80 dB CMRR rejects EMI from ignition coils and alternators; 14-bit resolution enables precise combustion timing correction within ±0.5° crank angle. |
Use Scenario: Simultaneous sampling of three-phase motor currents using shunt resistors in variable-frequency drives. IC Role / Device Role / Timing Role: Differential input ADC measuring bidirectional current flow with 0–2.5V unipolar span referenced to isolated shunt grounds. Use Value: 39 ns acquisition time supports accurate current reconstruction at 20 kHz PWM frequencies; 125°C rating permits placement near IGBT modules. |
| Portable Medical Ultrasound Front-End | Uninterruptible Power Supply (UPS) Monitoring |
|
Use Scenario: Digitizing low-amplitude echo return signals from piezoelectric transducers in handheld ultrasound devices. IC Role / Device Role / Timing Role: Low-noise, low-power ADC converting differential analog outputs from T/R switch and LNA stages. Use Value: 70.5 dB SINAD at 1.4 MHz preserves signal fidelity for B-mode imaging; Sleep mode extends battery runtime between scanning sessions. |
Use Scenario: Continuous monitoring of AC input voltage, battery voltage, and load current in rack-mounted UPS systems. IC Role / Device Role / Timing Role: High-accuracy ADC digitizing isolated sensor outputs for RMS calculation, harmonic analysis, and fault detection. Use Value: Internal 2.5V reference ensures stable scaling across wide temperature swings; 14-bit resolution detects <10 mV changes in 230 VAC RMS sensing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed differential ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8860IDRCT | 16-bit, 1 Msps SAR ADC; 3.3V supply; 91 dB SNR; no integrated reference; requires external REF. | Better DC accuracy and SNR but lower speed; suited for precision DC-coupled measurements rather than dynamic signal capture. | Select when resolution >14-bit and sampling rate ≤1 Msps suffices; avoid if 2.8 Msps or internal reference is required. |
| MAX1190ECM+T | 14-bit, 2.5 Msps; 3V supply; 72 dB SINAD at 1 MHz; 85°C max temp; no Sleep mode; different pinout (16-pin TQFN). | Lacks extended temperature grade and ultra-low-power Sleep mode; higher power (15 mW active) limits portable use. | Consider for cost-sensitive industrial designs where 85°C ambient is sufficient and board space allows larger package. |
Compared with ADS8860IDRCT and MAX1190ECM+T, the LTC1403HMSE#TRPBF uniquely combines 2.8 Msps speed, 125°C operation, 10 µW Sleep mode, and integrated 2.5V reference in a compact 10-lead MSOP - making it optimal for thermally constrained, battery-aware, high-dynamic-range systems.
Availability
LTC1403HMSE#TRPBF is available at Aetrix Electronics and suitable for automotive engine control, industrial motor drives, portable medical diagnostics, and uninterruptible power supply monitoring requiring stable component supply across extended temperature ranges.
Supply support for LTC1403HMSE#TRPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, formed through the acquisition of Linear Technology in 2017.
The LTC1403 family was developed by Linear Technology specifically for high-speed, low-power, differential-input data acquisition in space-constrained and thermally demanding applications - emphasizing robustness, integration, and ease of use in real-world signal chains.
FAQ
What is the guaranteed operating temperature range for the LTC1403HMSE#TRPBF?
The LTC1403HMSE#TRPBF is rated for continuous operation from –40°C to +125°C, as confirmed in the Absolute Maximum Ratings table and Converter Characteristics section of the official datasheet. This H-grade qualification makes LTC1403HMSE#TRPBF suitable for under-hood automotive, industrial motor control, and high-reliability embedded applications where ambient temperatures exceed standard commercial or industrial grades.
Does the LTC1403HMSE#TRPBF support external reference voltage, and what is the valid range?
Yes, the LTC1403HMSE#TRPBF supports external reference voltage applied to the VREF pin (Pin 3). The valid range is 2.55 V to VDD (up to 3.6 V), as specified in the Internal Reference Characteristics table. An external reference must exceed the internal 2.5 V bandgap output to override it, and the device draws up to 3 mA during conversion when using an external reference - requiring appropriate drive capability from the reference source.
How does the Sleep mode of the LTC1403HMSE#TRPBF activate, and what is its power consumption?
Sleep mode on the LTC1403HMSE#TRPBF is activated by applying four or more CONV pulses while holding SCK static (high or low), as defined in the Pin Functions section. In Sleep mode, the LTC1403HMSE#TRPBF consumes only 10 µW (2 µA at 3V), reducing power by >99% compared to active operation. VREF requires 2 ms to re-stabilize after wake-up, and the first conversion after exit is valid only after this settling period.
What is the differential input voltage range and common-mode range for the LTC1403HMSE#TRPBF?
The LTC1403HMSE#TRPBF accepts a differential input voltage range of 0 V to 2.5 V (unipolar) between AIN+ and AIN–, as stated in the Analog Input section. Its common-mode input range spans from ground (0 V) to VDD (up to 3.6 V), allowing flexible biasing in single-supply systems. Exceeding the 2.5 V differential limit saturates the output to all ones; going below 0 V saturates to all zeros.
Is the LTC1403HMSE#TRPBF pin-compatible with other variants in the LTC1403/LTC1403A family?
Yes, the LTC1403HMSE#TRPBF shares identical pin configuration, package (10-lead MSOP), and pin functions with all other LTC1403 and LTC1403A variants (e.g., LTC1403CMSE#TRPBF, LTC1403AIMSE#TRPBF). Differences are limited to resolution (12-bit vs 14-bit), temperature grade, and AC performance specifications - enabling drop-in replacement across grades when design margins permit.
LTC1403HMSE#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 2.8M
- Number of Inputs:
- 1
- Input Type:
- Differential, Single Ended
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 2.7V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 10-MSOP-EP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1403HMSE#TRPBF FAQ
1.How can I place an order for LTC1403HMSE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1403HMSE#TRPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LTC1403HMSE#TRPBF reliable?
The price and inventory of LTC1403HMSE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1403HMSE#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1403HMSE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1403HMSE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1403HMSE#TRPBF?
LTC1403HMSE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1403HMSE#TRPBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LTC1403HMSE#TRPBF?
For technical support, including LTC1403HMSE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1403HMSE#TRPBF requirements.
6.How does Aetrix verify that LTC1403HMSE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1403HMSE#TRPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LTC1403HMSE#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1403HMSE#TRPBF?
All LTC1403HMSE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1403HMSE#TRPBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LTC1403HMSE#TRPBF part is unused and in its original packaging.
Return procedure for LTC1403HMSE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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